Toner

Abstract

A toner comprising a binder resin and a colorant, wherein the toner has a Martens hardness, as measured at a maximum load condition of 2.0×10−4 N, of from 200 MPa to 1,100 MPa.

What is claimed is: 
     
       1. A toner comprising a toner particle that contains a binder resin and a colorant, wherein
 the toner has a Martens hardness, as measured at a maximum load condition of 2.0×10 −4  N, of from 200 MPa to 1,100 MPa. 
 
     
     
       2. The toner according to  claim 1 , wherein the toner has a Martens hardness, as measured at a maximum load condition of 9.8×10 −4  N, of from 5 MPa to 100 MPa. 
     
     
       3. The toner according to  claim 1 , wherein the toner particle has a surface layer containing an organosilicon polymer, and
 the number of carbon atoms directly bonded to the silicon atom in the organosilicon polymer is on average from 1 to 3 per silicon atom. 
 
     
     
       4. The toner according to  claim 3 , wherein a fixing ratio of the organosilicon polymer is at least 90%. 
     
     
       5. The toner according to  claim 3 , wherein the organosilicon polymer has a substructure represented by formula (1)
   R—SiO 3/2   formula (1)
 
 
       (R represents a hydrocarbon group having from 1 to 6 carbons). 
     
     
       6. The toner according to  claim 5 , wherein R is a hydrocarbon group having from 1 to 3 carbons. 
     
     
       7. The toner according to  claim 1 , wherein the toner particle has a positively charged particle on the surface thereof, and
 the number-average particle diameter of the positively charged particle is from 0.10 μm to 1.00 μm. 
 
     
     
       8. The toner according to  claim 7 , wherein a fixing ratio of the positively charged particle to the toner particle is from 5% to 75%. 
     
     
       9. The toner according to  claim 1 , wherein the toner particle has a hydrotalcite on the surface thereof. 
     
     
       10. The toner according to  claim 1 , wherein the toner particle has boron nitride on the surface thereof. 
     
     
       11. The toner according to  claim 10 , wherein a fixing ratio of the boron nitride to the toner particle is at least 80%.